Provincial police say they are investigating a "significant disturbance" that involved pepper spray and multiple altercations in the crowd of a high school football game in Caledon, Ont., Friday. Officers in attendance at Friday night's game at Humberview Secondary School responded around 8 p.m. to reports of pepper spray being deployed amongst "a large gathering of students" in the crowd, Ontario Provincial Police (OPP) said in a news release Monday.